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paper

Rank two Cohen-Macaulay modules over singularities of type $x_1^3+x_2^3+x_3^3+x_4^3$

arXiv:math/0410625

Abstract

We describe, by matrix factorizations, all the rank two maximal Cohen-Macaulay modules over singularities of type $x_1^3+x_2^3+x_3^3+x_4^3$.